Industrial chemicals · Taylor, TXTechnical Data Sheet
Inhibited Propylene Glycol 25/75 with OAT Inhibitor — Data Center Coolant
25%
- CAS number
- 57-55-6
- Structure
Structure · PubChem - Grade
- 25%
Identity & Composition
- Product Name
- Inhibited Propylene Glycol 25/75 with OAT Inhibitor — Data Center Coolant
- Alliance Code
- SHOPIFY-7990713909290
- Grade
- —
- Concentration
- 25%
- CAS Number
- 57-55-6Adjudicated
- Formula
- C3H8O2Adjudicated
- Molecular Weight
- 76.09Adjudicated
- Product Type
- Mixture
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Reserve alkalinity | ≥ 1.5 mL at 25 vol % propylene glycol | 1.8 | ASTM D1121 | Interpreted |
| Composition | 25% (v/v) propylene glycol with corrosion inhibitors | Conforms | — | Interpreted |
| Propylene glycol concentration | 24.0 - 26.0 % v/v | 24.7 % | — | Interpreted |
| Chloride (Cl) | ≤ 25 ppm | 0.21 ppm | ASTM D3634 | Interpreted |
| Silicate, phosphate, nitrite, nitrate, borate and amine content | None detected (< 10 ppm each) | 0.36 ppm | ICP-OES / ion chromatography | Interpreted |
| Foaming tendency | Volume ≤ 150 mL; break time ≤ 5 s | Passes test | ASTM D1881 | Interpreted |
| Burst protection | -1 °F (-18.3 °C) at 25 vol % propylene glycol | -1 °F (-18.3 °C) | Dynalene PG series data table | Interpreted |
Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade — | 25% | — | current | current |
| — | 50% | — | SHOPIFY-7859432226858 | View TDS → |
| — | 40% | — | SHOPIFY-7859432194090 | View TDS → |
| — | 35% | — | SHOPIFY-7990713942058 | View TDS → |
| — | 30% | — | SHOPIFY-7859429277738 | View TDS → |
| — | 20% | — | SHOPIFY-15395850027241 | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Clear, colorless to pale yellow liquid (not dyed) | Adjudicated |
| Odor | Mild, characteristic | Adjudicated |
| pH | Typically 7.0-9.0 (ASTM D1287); measured value reported on the lot Certificate of Analysis | Adjudicated |
| Specific Gravity (20 °C) | 1.022-1.030 (20 °C), calculated from formulation | Adjudicated |
| Density | 1.024 g/cm³ | Interpreted |
| Boiling Point | 214 °F at 25 vol % propylene glycol | Interpreted |
| Melting Point | 14 °F (-10.0 °C) at 25 vol % propylene glycol | Interpreted |
| Flash Point | Not flammable (aqueous solution) | Adjudicated |
| Solubility (water) | Miscible with water | Adjudicated |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- Not regulatedAdjudicated
- Hazard Class
- Not regulatedAdjudicated
- Packing Group
- Not regulatedAdjudicated
- Proper Shipping Name
- Not regulatedAdjudicated
GHS / OSHA HazCom 2012
- Signal Word
- Not regulatedAdjudicated
- H-Codes (Hazard Statements)
- —no canonical
- P-Codes (Precautionary Statements)
- —no canonical
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- —no canonical
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: ECHA CLP Annex VI for harmonised classifications, NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Inhibited Propylene Glycol 25/75 with OAT Inhibitor — Data Center Coolant. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Application Guidance
Inhibited Propylene Glycol 25/75 with OAT Inhibitor — Data Center Coolant is a glycol-based heat-transfer and freeze-protection fluid. Concentration sets the freeze and burst protection; the inhibitor package sets how long the system stays protected from corrosion.
- Closed-loop heat transfer and process cooling
- Data-centre and chilled-water freeze protection
- HVAC hydronic loops and glycol makeup
- Freeze and burst protection for idle or seasonal systems
Verify concentration against the required freeze and burst protection, and confirm elastomer and metallurgy compatibility for the service temperature. Only a USP or food-grade propylene glycol is suitable where incidental food or potable contact is possible; inhibited grades are for closed-loop heat-transfer service only.
Storage & Handling
- Recommended Storage
- Cool, dry, well-ventilated area in tightly sealed original containers. Neat glycols are combustible liquids with high flash points (roughly 99–111 °C) and do not require a solvent store; aqueous blends will not sustain combustion. Protect inhibited coolants from contamination and from freezing below their stated protection point.Class-level guidance — not product-specific; the SDS controls.
- Handling Precautions
- Chemical-resistant gloves and splash goggles. Avoid contact with hot surfaces and hot process equipment. Inhibitor packages deplete in service — monitor rather than top up blindly.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Strong oxidizers, strong acids and strong bases. Galvanized (zinc) surfaces are attacked by many inhibited coolant packages. Verify elastomer and gasket compatibility for the service temperature; EPDM is standard for glycol/water service.Class-level guidance — not product-specific; the SDS controls.
- Shelf Life
- Consult Technical Services for product-specific shelf life
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
Not regulated for transport.
Confirm against shipping documents and carrier requirements before tender.
Revision History
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.3 | 2026-09-24 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-09-17 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-08-17 | Canonical data updated: 11 fields changed via the provenance/adjudication pipeline.
| canonical_change |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.